Definition:Quadratic
Jump to navigation
Jump to search
Definition
The word quadratic describes an expression or an equation involving the square of a given quantity.
Quadratic Polynomial
A quadratic polynomial is a polynomial of degree $2$.
Quadratic Equation
A quadratic equation is a polynomial equation of the form:
- $a x^2 + b x + c = 0$
such that $a \ne 0$.
Also known as
An older word for quadratic is quadric, but this is rarely seen nowadays.
Also see
- Results about quadratics can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): quadratic (quadric)
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): quadratic